CN113422941B

CN113422941B - HDMI data transmission and control system

Info

Publication number: CN113422941B
Application number: CN202110565333.9A
Authority: CN
Inventors: 卓越; 朱建银; 戚勇
Original assignee: Jiangsu Keda Hengxin Semiconductor Technology Co ltd
Current assignee: Jiangsu Keda Hengxin Semiconductor Technology Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2023-04-25
Anticipated expiration: 2041-05-24
Also published as: CN113422941A

Abstract

The invention relates to an HDMI data transmission and control system, comprising a first transmitter module and a first receiver module; the first transmitter module and the first receiver module are in communication connection through a single optical fiber; the first transmitter module comprises a first HDM I signal coding and decoding unit, a first gecarbox unit, a first crest factor control circuit and a first demultiplexer; the first roof-adjusting control circuit is connected with the first demultiplexer; a first PD+TIA unit and a first laser driving unit are additionally arranged between the first roof-adjusting control circuit and the first demultiplexer; the first transmitter module and the first receiver module are each capable of transmitting optical information and receiving optical information. The device can adopt a single optical fiber to realize HDMI high-speed TMDS data transmission and low-speed signal transmission such as SCL, SDA, CEC, HPD and Ut il intensity specified by HDMI protocol.

Description

HDMI data transmission and control system

Technical Field

The invention relates to the technical field of HDMI active optical cables, in particular to an HDMI data transmission and control system.

Background

An HDMI active optical cable is an HDMI signal transmission line manufactured by using optical fibers. Through specific Driver driving, a VCSEL LD laser is adopted to generate 850nm laser, so that the conversion from electricity to light is realized; and then the data is transmitted through an OM3 50um optical fiber to the light-to-electricity conversion of the receiving end, so that the data transmission is completed. The audio-visual effect of the 4K high-definition lossless signal transmission cinema level, the customization capability of the hundred-meter level, the wiring difficulty can be easily solved, the 18Gbps full-speed bandwidth can be easily met, and the 4K/3D cinema requirement can be easily met.

In the existing HDMI active optical cable technology, 4 optical fibers are generally used for transmitting 4-path differential TMDS high-speed signals of HDMI, copper core wires are continuously adopted for transmitting CEC/availability/SCL/SDA/HPD and other low-speed signals specified by HDMI protocol, or 4 optical fibers are used for transmitting 4-path differential TMDS high-speed signals of HDMI, and two optical fibers are adopted for transmitting compressed CEC/availability/SCL/SDA/HPD and other low-speed signals.

Because the use of many optic fibre and copper core wire among the prior art, material cost and installation cost are all great, in order to guarantee HDMI's high quality transmission simultaneously, the degree of difficulty of installing and erecting the HDMI line also promotes thereupon.

Disclosure of Invention

The invention aims to provide an HDMI data transmission and control system, which can complete HDMI data transmission and control by using a single optical fiber.

In order to solve the technical problems, the invention provides an HDMI data transmission and control system, which comprises a first transmitter module and a first receiver module; the first transmitter module and the first receiver module are in communication connection through a single optical fiber; the first transmitter module comprises a first HDMI signal coding and decoding unit, a first gecarbox unit, a first roof-adjusting control circuit and a first demultiplexer; the first HDMI signal encoding and decoding unit and the first gecarbox unit are both in data connection with the first top adjustment control circuit, and the first top adjustment control circuit is connected with the first demultiplexer; a first PD+TIA unit and a first laser driving unit are additionally arranged between the first roof-adjusting control circuit and the first demultiplexer; the first receiver module comprises a second HDMI signal coding and decoding unit, a second gecarbox unit, a second crest control circuit and a second demultiplexer; the second HDMI signal encoding and decoding unit and the second gecarbox unit are both in data connection with the second top adjustment control circuit, and the second top adjustment control circuit is connected with the second demultiplexer; a second PD+TIA unit and a second laser driving unit are additionally arranged between the second roof-adjusting control circuit and the second demultiplexer; the first transmitter module and the first receiver module are each capable of transmitting optical information and receiving optical information.

Preferably, by introducing the gecarbox unit so as to only use the optical demultiplexer, the cost and the area for using the optical multiplexer are saved, and the method is suitable for the condition that the HDMI differential TMDS high-speed signal path speed is low.

Preferably, the step of transmitting optical information by the first transmitter module includes: the HDMI four-way differential TMDS signal is converted into a single-way signal through the first gecarbox unit, and the single-way signal is input to the first top modulation control circuit; the first HDMI signal encoding and decoding unit converts five paths of signals of SCL, SDA, CEC, HPD and availability, and the five paths of signals after conversion are transmitted to a first top adjustment control circuit; the first top modulation control circuit converts the five paths of signals after conversion into a single path control signal, modulates the single path control signal and sends the modulated signal to the first laser driving unit; the first laser driving unit transmits the modulated single-path control signal to a first receiver module through the single optical fiber;

the step of receiving optical information by the first transmitter module includes: detecting an optical signal in the single optical fiber, and filtering the optical signal with a set wavelength by the first demultiplexer; the filtered optical signals are converted into electric signals through the first PD+TIA unit, and the electric signals are input to a first roof adjusting control circuit; the first top modulation control circuit demodulates the received signal and converts the demodulated signal into a control signal; the first HDMI signal coding and decoding unit codes the control signal.

Preferably, the step of receiving optical information by the first receiver module includes: detecting the optical signals in the single optical fiber, and filtering the optical signals with set wavelengths by the second demultiplexer; the optical signal is converted into an electrical signal through the second PD+TIA unit, and the electrical signal is input to the second roof-adjusting control circuit; the second top modulation control circuit demodulates the received electric signal and transmits the demodulated signal to a second HDMI signal encoding and decoding unit and a second gecarbox unit; the second gecarbox unit converts the demodulated signal into four paths of HDMI differential TMDS signals and transmits the four paths of HDMI differential TMDS signals to the corresponding four ports; the second HDMI signal coding and decoding unit decodes the demodulated signal;

the step of transmitting optical information by the first receiver module includes: the second HDMI signal encoding and decoding unit converts the SCL, SDA, CEC, HPD and availability five paths of signals and transmits the five paths of signals after conversion to a second top adjustment control circuit; the second roof adjusting control circuit converts the five paths of signals after conversion into a single path of control signals; the second top modulation control circuit modulates the single-channel control signal and sends the modulated signal to the second laser driving unit; the second laser driving unit sends the modulated signal to the single optical fiber, and the single-path control signal is transmitted to the first receiver module.

An HDMI data transmission and control system comprises a second transmitter module and a second receiver module; the second transmitter module and the second receiver module are in communication connection through a single optical fiber; the second transmitter module comprises a third HDMI signal coding and decoding unit, a third gecarbox unit, a third top-adjusting control circuit, a third demultiplexer and a third optical multiplexer; each third gecarbox unit comprises two third gecarbox devices; the third HDMI signal encoding and decoding unit and the third gecarbox device are both in data connection with the third top adjustment control circuit, and the third top adjustment control circuit is both connected with the third optical multiplexer and the third demultiplexer; a third PD+TIA unit and a third laser driving unit are additionally arranged between the third roof-adjusting control circuit and the third optical multiplexer; the second receiver module comprises a fourth HDMI signal encoding and decoding unit, a fourth gecarbox unit, a fourth top-adjusting control circuit, a fourth demultiplexer and a fourth optical multiplexer; each fourth gecarbox unit comprises two fourth gecarbox devices; the fourth HDMI signal encoding and decoding unit and the fourth gecarbox device are both in data connection with the fourth top adjustment control circuit, and the fourth top adjustment control circuit is both connected with the fourth optical multiplexer and the fourth demultiplexer; a fourth PD+TIA unit and a fourth laser driving unit are additionally arranged between the fourth top adjusting control circuit and the fourth optical multiplexer; the second transmitter module and the second receiver module are each capable of transmitting optical information and receiving optical information.

Preferably, by simplifying the design of the second gecarbox unit and adding an optical multiplexer, the circuit that the single optical fiber completes the HDMI data transmission and control can be realized. The second gecarbox unit is designed to combine 2 paths into 1 path, and meanwhile, an optical multiplexer is added to realize 2 paths of optical wavelength signal coupling. The above solution solves the design difficulty of the gecarbox unit where 4-way is combined into 1-way because the HDMI differential TMDS high speed signal path rate increases.

Preferably, the step of transmitting optical information by the second transmitter module includes: inputting HDMI four-way differential TMDS signals, converting the first two-way TMDS signals into a first single-way main data signal through the third gecarbox unit, and converting the second two-way TMDS signals into a second single-way main data signal through the third gecarbox unit; the first single-channel main data signal and the second single-channel main data signal are both input to the third top adjustment control circuit;

the third HDMI signal encoding and decoding unit converts the SCL, SDA, CEC, HPD and availability five paths of signals and transmits the five paths of signals after conversion to a third top adjustment control circuit; the third top-adjusting control circuit converts the five-way signals transmitted by the third HDMI signal coding and decoding unit into a single-way control signal; the third roof-adjusting control circuit modulates the single-channel control signal to a single-channel primary data signal I or a single-channel primary data signal II; the modulated single-channel main data signal I and the modulated single-channel main data signal II are sent to the third laser driving unit; the two third laser driving units transmit the modulated single-channel main data signal I and the modulated single-channel main data signal II to a third optical multiplexer; the third optical multiplexer couples the modulated single-channel main data signal I and the modulated single-channel main data signal II to a single optical fiber in a wavelength division multiplexing mode, and transmits the single-channel main data signal I and the single-channel main data signal II to the second receiver module;

The step of receiving optical information by the second transmitter module includes: detecting the optical signals in the single optical fiber, filtering the optical signals with set wavelength by the third demultiplexer, and transmitting the filtered optical signals to a third PD+TIA unit by the third demultiplexer; the optical signal is converted into an electrical signal through the third PD+TIA unit, and the electrical signal is input to a third roof-adjusting control circuit; the third top modulation control circuit demodulates and converts the received signal into a control signal, and transmits the control signal to a third HDMI signal encoding and decoding unit; the third HDMI signal codec unit decodes the control signal.

Preferably, the step of receiving optical information by the second receiver module includes: detecting optical signals in the single optical fiber, filtering the single-path main data signal I and the single-path main data signal II with set wavelengths by the fourth demultiplexer, and transmitting the filtered signals to a fourth PD+TIA unit by the fourth demultiplexer; the signals of the fourth PD+TIA unit are converted into two paths of electric signals, and the two paths of electric signals are input to the fourth top adjusting control circuit; the fourth crest control circuit demodulates one of the received signals and transmits the demodulated signal to a fourth HDMI signal encoding and decoding unit and a fourth geoframe unit; the fourth gecarbox unit converts the demodulated single-channel main data signal I and single-channel main data signal II into four-channel HDMI differential TMDS signals and transmits the four-channel HDMI differential TMDS signals to corresponding ports; the fourth HDMI signal coding and decoding unit codes the control signal;

The step of transmitting optical information by the second receiver module includes: SCL, SDA, CEC, HPD and availability five-way signals are transmitted to a fourth top-adjusting control circuit through the fourth HDMI signal encoding and decoding unit, and the fourth HDMI signal encoding and decoding unit converts the five-way signals; the fourth top-adjusting control circuit converts the five signals which are transmitted by the fourth HDMI signal encoding-decoding unit and are converted into a single-channel control signal again; the fourth top modulation control circuit modulates the single-channel control signal and sends the modulated signal to the fourth laser driving unit; the fourth laser driving unit sends the modulated single-path control signal to the single optical fiber, and the single optical fiber transmits the single-path control signal to the second receiver module.

Preferably, the HDMI data transmission and control system includes a third transmitter module and a third receiver module; the third transmitter module and the third receiver module are in communication connection through a single optical fiber; the third transmitter module and the third receiver module are both capable of transmitting optical information and receiving optical information; the third transmitter module comprises a fifth HDMI signal coding and decoding unit, a fifth top-adjusting control circuit, a fifth demultiplexer and a fifth optical multiplexer; the fifth HDMI signal coding and decoding unit is connected with a fifth top adjustment control circuit, and the fifth top adjustment control circuit is connected with the fifth optical multiplexer and the fifth demultiplexer; a fifth PD+TIA unit and a fifth laser driving unit are additionally arranged between the fifth top adjusting control circuit and the fifth optical multiplexer; the third receiver module comprises a sixth HDMI signal coding and decoding unit, a sixth modulated top control circuit, a sixth demultiplexer and a sixth optical multiplexer; the sixth HDMI signal encoding and decoding unit is connected with a sixth top-adjusting control circuit, and the sixth top-adjusting control circuit is connected with the sixth optical multiplexer and the fifth demultiplexer; a fifth PD+TIA unit and a sixth laser driving unit are additionally arranged between the sixth top adjusting control circuit and the sixth optical multiplexer.

Preferably, by eliminating the gecarbox unit and adding a third optical multiplexer capable of improving the coupling of the 2-path optical wavelength signals to the coupling of the 4-path optical wavelength signals, the HDMI data transmission and control of a single optical fiber can be achieved.

Preferably, the step of transmitting optical information by the third transmitter module includes: the HDMI four-way differential TMDS signal is transmitted to the fifth top adjusting control circuit; the fifth HDMI signal encoding and decoding unit converts SCL, SDA, CEC, HPD and availability five paths of signals and transmits the five paths of signals after conversion to a fifth top adjustment control circuit; the fifth top-adjusting control circuit converts the five-way signals which are transmitted by the fifth HDMI signal encoding-decoding unit and are converted into a single-way control signal again; the fifth top modulation control circuit modulates the single-channel control signal to any one of four paths of HDMI data paths, and sends the modulated four paths of HDMI data to a fifth laser driving unit; the four-way HDMI data comprises a first main data signal, a second main data signal, a third main data signal and a fourth main data signal; the four fifth laser driving units send the modulated four paths of HDMI data to a fifth optical multiplexer module, the fifth optical multiplexer module couples the four paths of HDMI data to the single optical fiber in a wavelength division multiplexing mode, and the single optical fiber sends the four paths of HDMI data to a third receiver module;

The step of receiving optical information by the third receiver module includes: detecting optical signals in the single optical fiber, filtering the four paths of HDMI data with set wavelength by the sixth demultiplexer, and transmitting the filtered signals to a sixth PD+TIA unit by the sixth demultiplexer;

the sixth PD+TIA unit converts the signals into four paths of electric signals and inputs the four paths of electric signals to the sixth top adjusting control circuit; the sixth top modulation control circuit demodulates the received signal and transmits the demodulated signal to a sixth HDMI signal encoding and decoding unit; the demodulated four paths of electrical signals are converted into four paths of HDMI differential TMDS signals and transmitted to corresponding ports; the sixth HDMI signal codec unit decodes the control signal.

An HDMI data transmission and control system comprises a fourth transmitter module and a fourth receiver module; the fourth transmitter module and the fourth receiver module are connected through single optical fiber communication; the fourth transmitter module comprises a seventh HDMI signal coding and decoding unit, a seventh laser driving unit, a seventh demultiplexer and a seventh optical multiplexer; the seventh HDMI signal encoding and decoding unit is connected with the seventh optical multiplexer through a seventh PD+TIA unit and a seventh laser driving unit; the fourth receiver module comprises an eighth HDMI signal coding and decoding unit, an eighth laser driving unit, an eighth demultiplexer and an eighth optical multiplexer; the eighth HDMI signal encoding and decoding unit is connected with the eighth optical multiplexer through an eighth PD+TIA unit and an eighth laser driving unit; the fourth transmitter module and the fourth receiver module are each capable of receiving and transmitting optical information.

Preferably, by canceling the top-adjusting circuit and adding an optical multiplexer, the HDMI data transmission and control of a single optical fiber can be realized.

Preferably, the step of transmitting optical information by the fourth transmitter module includes: the HDMI four-way differential TMDS signal is transmitted to the seventh laser driving unit; the seventh HDMI signal encoding and decoding unit converts SCL, SDA, CEC, HPD and availability five paths of signals and transmits the five paths of converted signals to the seventh laser driving unit; the five laser driving modules send the five signals to a seventh optical multiplexer module, the seventh optical multiplexer module couples the five signals to the single optical fiber in a wavelength division multiplexing mode, and the single optical fiber sends the five signals to a seventh receiver module;

the step of receiving optical information by the fourth receiver module includes: detecting optical signals in the single optical fiber, filtering the five paths of signals with set wavelengths by the eighth demultiplexer, and transmitting the filtered signals to an eighth PD+TIA unit by the eighth demultiplexer; the eighth PD+TIA unit converts the optical signal into an electrical signal, inputs the HDMI four-path differential TMDS signal to a corresponding port, and simultaneously transmits one path of control signal to the eighth HDMI signal encoding/decoding unit; the eighth HDMI signal coding and decoding unit codes the control signal;

The step of transmitting optical information by the fourth receiver module includes: SCL, SDA, CEC, HPD and availability five signals are transmitted to the eighth laser driving unit via the eighth HDMI signal codec unit; the eighth laser driving unit transmits the five signals to a single optical fiber, which transmits the five signals to a fourth receiver unit.

Drawings

In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which:

fig. 1 is a schematic diagram of a first HDMI data transmission and control system according to the present invention;

fig. 2 is a schematic diagram of a frame of a second HDMI data transmission and control system according to the present invention;

fig. 3 is a schematic diagram of a third HDMI data transmission and control system according to the present invention;

fig. 4 is a schematic diagram of a fourth HDMI data transmission and control system according to the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.

Example 1

Referring to fig. 1, the invention discloses an HDMI data transmission and control system, comprising:

a first transmitter module and a first receiver module.

The first transmitter module and the first receiver module are named as the transmission direction of an HDMI differential TMDS signal, the HDMI differential TMDS signal is a high-speed signal, and the transmitter and the receiver have the functions of transmitting optical information and receiving optical information.

The first transmitter module and the first receiver module are connected by a single optical fiber. The first transmitter module and the first receiver module simultaneously transmit optical signals with different wavelengths to the single optical fiber, so that a first demultiplexer is additionally arranged in each of the first transmitter module and the first receiver module to filter the optical signals and transmit the optical signals.

Specifically, the first transmitter module includes a first HDMI signal codec unit, a first gecarbox unit, a first crest control circuit, and a first demultiplexer. The first HDMI signal encoding and decoding unit and the first gecarbox unit are connected with the first top adjustment control circuit, and a first PD+TIA unit and a first laser driving unit are additionally arranged between the first top adjustment control circuit and the first demultiplexer.

The first receiver module includes a second HDMI signal codec unit, a second gecarbox unit, a second tone-top control circuit, and a second demultiplexer. The second HDMI signal encoding and decoding unit and the second gecarbox unit are both in data connection with a second top adjustment control circuit, and the second top adjustment control circuit is connected with a second demultiplexer. A second PD+TIA unit and a second laser driving unit are additionally arranged between the second top adjusting control circuit and the second demultiplexer.

Preferably, the step of transmitting the optical information by the first transmitter module includes:

step one, converting the HDMI four-way differential TMDS high-speed signal into a single-way signal through the first gecarbox unit, wherein the single-way signal is a single-way high-speed signal, and the single-way high-speed signal is transmitted to a first roof-adjusting control circuit.

And step two, SCL, SDA, CEC, HPD, utility, converting the five low-speed signals into a format convenient for the first receiver module to process by performing protocol processing, arbitration, delay and other operations through a first HDMI signal encoding and decoding unit, and transmitting a group of converted five low-speed signals (also can be one serial signal) to a first roof-adjusting control circuit by the first HDMI signal encoding and decoding unit.

And thirdly, the first top modulation control circuit converts a group of signals transmitted by the first HDMI signal encoding and decoding unit into a single-path signal, modulates the single-path signal onto the HDMI single-path high-speed signal in a modulation mode, and sends the modulated signal to the first laser driving module.

And step four, the first laser driving module selects a proper wavelength to drive the first laser driving module to send the modulated single-path control signal to a single optical fiber, and the single control signal is transmitted to the first receiver module through the single optical fiber.

The step of receiving optical information by the first transmitter module includes:

step one, detecting the optical signals in the single optical fiber, filtering out the optical information with the set wavelength through a first demultiplexer, and transmitting the optical information to a first PD+TIA module unit.

And step two, the first PD+TIA unit converts the optical signal into an electric signal and inputs the electric signal into the first roof adjusting control circuit.

And thirdly, the first roof-adjusting control circuit is responsible for demodulating a single-channel control signal sent from the first receiver module from signals of a receiving channel, wherein the single-channel control signal is a single-channel HDMI low-speed control signal. The single control signal is converted into a group of control signals (or a serial signal) which are processed by the first HDMI signal encoding-decoding unit, and the group of control signals are transmitted to the first HDMI signal encoding-decoding unit.

And step four, the first HDMI signal encoding and decoding unit is responsible for decoding a group of control signals (also can be a path of serial signals) transmitted by the first roof-adjusting control circuit, and timely controlling SCL, SDA, CEC, HPD, utility path of low-speed signal change according to protocol regulations.

The step of receiving optical information by the first receiver module includes:

step one, detecting the optical signals in the single optical fiber, filtering the optical signals with set wavelength by a second demultiplexer, and transmitting the filtered optical signals to a second PD+TIA unit by the second demultiplexer.

And step two, the second PD+TIA module is used for converting the optical signal into an electric signal and transmitting the electric signal to a second roof adjusting control circuit.

And thirdly, the second top-adjusting control circuit is responsible for demodulating a single-channel HDMI low-speed control signal from the signal of the receiving channel, converting the single-channel HDMI low-speed control signal into a group of control signals (or a group of serial signals) which are convenient for the second HDMI signal encoding and decoding unit to process, and transmitting the group of control signals to the second HDMI signal encoding and decoding unit. And simultaneously transmitting the demodulated single-channel HDMI high-speed data signal to a second gecarbox unit.

And step four, the second gecarbox unit restores the single-path HDMI high-speed data control signal into a four-path HDMI differential TMDS signal and transmits the four-path HDMI differential TMDS signal to the corresponding four-path port.

And fifthly, the second HDMI signal encoding/decoding unit is responsible for decoding a group of control signals (or a path of serial signals) transmitted by the second crest control circuit, and timely controlling the change of SCL, SDA, CEC, HPD and availability 5 paths of low-speed signals according to protocol regulations.

The step of transmitting optical information by the first receiver module includes:

and step one, SCL, SDA, CEC, HPD and availability five signals are converted by a second HDMI signal encoding and decoding unit, and the converted five signals are transmitted to a second roof-adjusting control circuit.

Step two, the second top adjusting control circuit converts the five paths of signals transmitted by the second HDMI signal encoding and decoding unit into a single path of control signals; on the other hand, the second top modulation control circuit can modulate the single-path control signal onto one-path high-speed signal in a modulation mode, and the high-speed signal is sent to the second laser driving unit. The high-speed signal can be used for upgrading the HDMI protocol or transmitting other additional high-speed information by adding a part of small functional modules.

Preferably, in the above embodiment, by adding the first gecarbox unit and the second gecarbox unit, only the first demultiplexer, the second demultiplexer and a single optical fiber are used to complete HDMI data transmission and control. The cost and the area of the optical multiplexer are saved, and the method is suitable for the condition that the HDMI differential TMDS high-speed signal path speed is low.

Example two

Referring to fig. 2, an HDMI data transmission and control system, comprising:

A second transmitter module and a second receiver module.

The second transmitter module and the second receiver module are in communication connection through a single optical fiber. The second transmitter module includes a third HDMI signal codec unit, a third gearbor unit, a third crest control circuit, a third demultiplexer, and a third optical multiplexer.

Each of the above-described third gecarbox units includes two third gecarbox devices. The third HDMI signal codec unit and the third gecarbox device are both connected to the third topping control circuit, and the third topping control circuit is connected to the third optical multiplexer and the third demultiplexer. A third PD+TIA unit and a third laser driving unit are additionally arranged between the third top adjusting control circuit and the third optical multiplexer.

The second receiver module includes a fourth HDMI signal codec unit, a fourth gecarbox unit, a fourth tone-top control circuit, a fourth demultiplexer, and a fourth optical multiplexer. Each fourth gecarbox cell includes two fourth gecarbox devices. The fourth HDMI signal encoding and decoding unit and the fourth gecarbox device are both in data connection with a fourth top-adjusting control circuit, and the fourth top-adjusting control circuit is both connected with a fourth optical multiplexer and a fourth demultiplexer. A fourth PD+TIA unit and a fourth laser driving unit are additionally arranged between the fourth top adjusting control circuit and the fourth optical multiplexer.

And a third PD+TIA unit and two third laser driving units are arranged in the third emitter module, and the third laser driving units are in one-to-one correspondence with the third gecarbox devices.

And two fourth PD+TIA units and one laser driving unit are arranged in the second receiver module, and the fourth PD+TIA units and the fourth gecarbox devices are in one-to-one correspondence.

The second transmitter module and the second receiver module are each capable of transmitting optical information and receiving optical information.

Preferably, the step of transmitting optical information by the second transmitter module includes:

step one, HDMI four-way differential TMDS signals, wherein the HDMI four-way differential TMDS signals are HDMI 4-way differential TMDS high-speed signals; the first two paths of TMDS signals are converted into a first single-path main data signal through a third gecarbox unit, and the second two paths of TMDS signals are converted into a second single-path main data signal through the third gecarbox unit. The first single-channel main data signal and the second single-channel main data signal are input to the second top modulation control circuit.

Step two, SCL, SDA, CEC, HPD, utility, the low-speed signals are converted into a format convenient for the second receiver module to process by protocol processing, arbitration, delay and other operations through the third HDMI signal encoding/decoding unit, and the third HDMI signal encoding/decoding unit transmits a group of five converted signal signals (or a serial signal) to the third roof-regulating control circuit.

And thirdly, the third top modulation control circuit converts a group of signals transmitted by the third HDMI signal encoding and decoding unit into a single-channel signal, modulates the single-channel control signal onto a single-channel main data signal I or a single-channel main data signal II in a modulation mode, and sends the modulated single-channel main data signal I and the modulated single-channel main data signal II to a third laser driving module.

And step four, the two third laser driving units transmit the single-channel main data signal I and the single-channel main data signal II modulated in the step three to a third optical multiplexer. The third optical multiplexer module couples the first single-channel main data signal and the second single-channel main data signal to the single optical fiber in a wavelength division multiplexing mode, and the single optical fiber transmits the first single-channel main data signal and the second single-channel main data signal to the second receiver module.

Preferably, the step of receiving optical information by the second transmitter module includes:

step one, detecting the optical signals in the single optical fiber, filtering the optical signals with set wavelength through a third demultiplexer, and transmitting the optical signals to a third PD+TIA unit.

And step two, the third PD+TIA module is used for converting the optical signal into an electric signal and transmitting the electric signal to a third roof adjusting control circuit.

And thirdly, the third top adjusting control circuit is responsible for demodulating a single-channel HDMI low-speed control signal from the second receiver module from the signals of the receiving channel, converting the single-channel HDMI low-speed control signal into a group of control signals (or a group of serial signals) which are convenient for the HDMI low-speed signal encoding and decoding module to process, and transmitting the control signals to a third HDMI signal encoding and decoding unit.

And step four, the third HDMI signal encoding and decoding unit is responsible for decoding the control signal (a path of serial signal also can be used) transmitted by the third roof-adjusting control circuit, and timely controlling the change of SCL, SDA, CEC, HPD and availability 5 paths of low-speed signals according to protocol regulations.

Preferably, the step of receiving optical information by the second receiver module includes:

step one, detecting the optical signals in the single optical fiber, filtering the single-path main data signal I and the single-path main data signal II with set wavelengths by the fourth demultiplexer, and transmitting the filtered signals to a fourth PD+TIA unit by the second demultiplexer.

And step two, the fourth PD+TIA unit converts the optical signals in the step one into two paths of electric signals and inputs the two paths of electric signals to a fourth top adjusting control circuit.

And thirdly, the fourth top adjusting control circuit is responsible for demodulating one of two electric signals of the receiving channel, namely, one HDMI low-speed control signal from the second transmitter module, converting the one HDMI low-speed control signal into a group of control signals (or one serial signal) which are convenient for the HDMI low-speed signal encoding and decoding module to process, and transmitting the group of control signals to the fourth HDMI signal encoding and decoding unit. And simultaneously transmitting the demodulated control signal to a fourth gecarbox module.

And step four, the fourth gecarbox unit restores the single-path main data signal I and the single-path main data signal I into four-path HDMI differential TMDS signals and transmits the four-path HDMI differential TMDS signals to the corresponding 4-path ports.

And fifthly, the fourth HDMI signal encoding/decoding unit is responsible for decoding a group of control signals (or a path of serial signals) transmitted by the fourth crest control circuit, and timely controlling the change of SCL, SDA, CEC, HPD and availability 5 paths of low-speed signals according to protocol regulations.

The step of the second receiver module transmitting the optical information comprises:

and step one, SCL, SDA, CEC, HPD and availability 5 low-speed signals are converted into a format convenient for the second transmitter module to process by performing protocol processing, arbitration, delay and other operations through a fourth HDMI signal encoding and decoding unit, and the fourth HDMI signal encoding and decoding unit transmits a group of converted signals (a serial signal can also be one way) to a fourth roof-adjusting control circuit.

And secondly, the fourth top modulation control circuit converts a group of signals transmitted by the fourth HDMI signal encoding and decoding unit into a single-path control signal, modulates the single-path control signal onto a path of high-speed signal in a modulation mode, and sends the modulated signal to the fourth laser driving unit. This high-speed signal can be used later as an upgrade to the HDMI protocol by adding a small number of functional modules, or to communicate other additional high-speed information.

And thirdly, the second laser driving unit sends the single-path control signal modulated in the second step to a single optical fiber, and the single optical fiber transmits the single-path control signal to the second receiver unit.

Preferably, the difference between the scheme of the second embodiment and the scheme of the second embodiment is that the designs of the fourth gecarbox unit and the fourth gecarbox unit are simplified, and meanwhile, the optical multiplexer is added, so that a circuit that a single optical fiber completes the HDMI data transmission and control can be realized. The second circuit solves the problem that the high-speed signal path rate of the HDMI differential TMDS is increased, so that the design of a second gecarbox unit with 4 paths combined into 1 path is difficult, the design of a simplified gecarbox is that two paths are combined into one path, and meanwhile, the function module of an optical multiplexer is added, and the coupling of two paths of optical wavelength signals is realized.

Example III

Referring to fig. 3, an HDMI data transmission and control system, comprising:

a third transmitter module and a third receiver module. The third transmitter module and the third receiver module are in communication connection through a single optical fiber.

The third transmitter module includes a fifth HDMI signal codec unit, a fifth modulated top control circuit, a fifth demultiplexer, and a fifth optical multiplexer. The fifth HDMI signal encoding and decoding unit is connected with a fifth top adjustment control circuit, and the fifth top adjustment control circuit is connected with a fifth optical multiplexer and a fifth demultiplexer.

The third receiver module includes a sixth HDMI signal codec unit, a sixth modulated top control circuit, a sixth demultiplexer, and a sixth optical multiplexer. The sixth HDMI signal encoding and decoding unit is connected with a sixth top adjustment control circuit, the sixth top adjustment control circuit is connected with a sixth optical multiplexer and a sixth demultiplexer, and a sixth PD+TIA unit and a sixth laser driving unit are additionally arranged between the sixth top adjustment control circuit and the sixth optical multiplexer.

Specifically, a fifth pd+tia unit and a fifth laser driving unit are additionally disposed between the fifth top-adjusting control circuit and the fifth optical multiplexer. A fifth PD+TIA unit and four fifth laser driving units are arranged in the third transmitter module; the third receiver module is provided with a sixth laser driving unit and four sixth pd+tia units.

Preferably, the step of transmitting optical information by the third transmitter module includes:

and step one, the HDMI four-way differential TMDS signal is directly transmitted to a fifth top adjusting control circuit.

And step two, SCL, SDA, CEC, HPD, utility, converting the low-speed signals into a format convenient for the processing of the third receiver module by performing protocol processing, arbitration, delay and other operations through a fifth HDMI signal encoding and decoding unit, and transmitting a group of five converted signal signals (also can be one serial signal) to a fifth roof-adjusting control circuit by the fifth HDMI signal encoding and decoding unit.

And thirdly, the fifth top modulation control circuit converts a group of five paths of signals transmitted by the fifth HDMI signal encoding and decoding unit into a single path of signals, modulates the single path of control signals onto any 1 path of HDMI data paths in the 4 paths of HDMI data paths in a modulation mode, and sends the modulated 4 paths of HDMI data signals to the fifth laser driving unit. Further, the signal transmitted by the fifth HDMI signal codec unit may be modulated onto multiple data simultaneously.

And step four, four of the fifth laser driving units send the four paths of HDMI data modulated in the step three to a fifth optical multiplexer module, the fifth optical multiplexer module couples the four paths of HDMI data to a single optical fiber in a wavelength division multiplexing mode, and the single optical fiber sends the four paths of HDMI data to a fifth receiver module.

Preferably, the step of receiving optical information by the third transmitter module includes:

step one, detecting an optical signal in the single optical fiber, wherein the fifth demultiplexer filters the optical signal with a set wavelength, and the fifth demultiplexer transmits the filtered optical signal to a fifth pd+tia unit.

And step two, the fifth PD+TIA unit converts the optical signal into an electric signal and inputs the electric signal to a fifth top adjusting control circuit.

And thirdly, the fifth top adjusting control circuit is responsible for demodulating one or more high-speed signals in four paths of high-speed signals of a receiving path at the moment, demodulating a single path control signal from a third transmitter module, converting the single path control signal into a group of control signals (or a path of serial signals) which are convenient for processing by a fifth HDMI signal encoding and decoding unit, and transmitting the group of control signals to the fifth HDMI signal encoding and decoding unit. And simultaneously, the demodulated four paths of HDMI high-speed data signals are recovered into four paths of HDMI differential signals, and the four paths of HDMI differential signals are transmitted to the corresponding four paths of ports.

And step four, the fifth HDMI signal encoding and decoding unit decodes the control signal (also can be a serial signal) transmitted by the fifth crest adjusting control circuit in the step three, and timely controls SCL, SDA, CEC, HPD, utility path of low-speed signal change according to protocol regulations.

Preferably, the step of transmitting optical information by the third receiver module includes:

step one, SCL, SDA, CEC, HPD, utility, the low-speed signals are converted into a format convenient for the third transmitter module to process by the protocol processing, arbitration, delay and other operations through the sixth HDMI signal encoding and decoding unit, and the sixth HDMI signal encoding and decoding unit transmits a group of converted signals (or a serial signal) to the sixth ceiling control circuit.

And secondly, the sixth modulated top control circuit converts a group of signals transmitted by the sixth HDMI signal encoding and decoding unit into a single-path control signal, modulates the single-path control signal onto a path of high-speed signal in a modulation mode, and sends the modulated signal to the sixth laser driving unit. This high-speed signal can be used later to upgrade the HDMI protocol by adding a small number of functional modules, or to communicate other additional information.

And thirdly, the sixth laser driving unit sends the modulated single-path control signal to a single optical fiber, and the single control signal is transmitted to a third receiver module through the single optical fiber.

Preferably, the step of receiving optical information by the third receiver module includes:

Step one, detecting the optical signals in the single optical fiber, wherein the sixth demultiplexer filters the four paths of optical signals with set wavelengths, and the sixth demultiplexer transmits the filtered four paths of optical signals to a sixth pd+tia unit.

And step two, the sixth PD+TIA unit converts the four paths of optical signals in the step one into four paths of electric signals and inputs the four paths of electric signals to a sixth top adjusting control circuit.

And thirdly, the top adjusting control circuit is responsible for demodulating one or more high-speed signals in four paths of high-speed signals of a receiving path at the moment, demodulating a single path of control signal from a sixth transmitter module, converting the control signal into a group of control signals (or a path of serial signals) which are convenient for processing by a sixth HDMI signal encoding and decoding unit, and transmitting the group of control signals to the sixth HDMI signal encoding and decoding unit. And simultaneously, the demodulated four paths of high-speed data signals are recovered into four paths of HDMI differential signals and are transmitted to the corresponding four paths of ports.

And fifthly, the sixth HDMI signal codec unit is responsible for decoding a group of control signals (or a path of serial signals) transmitted by the sixth crest adjusting control circuit, and timely controlling SCL, SDA, CEC, HPD, utility path of low-speed signal changes according to protocol regulations.

Preferably, in the above embodiment, compared with the second embodiment, the gecarbox unit is omitted, and the HDMI data transmission and control can be completed by a single optical fiber, and the scheme solves the problem that the design of the gecarbox is difficult due to the high speed of the HDMI differential TMDS high speed signal path, so that the gecarbox unit is omitted, and meanwhile, the functions of the fifth optical multiplexer and the sixth optical multiplexer are improved, and the coupling of two optical wavelength signals is improved to the coupling of four optical wavelength signals. The third embodiment is also applicable to the case where the HDMI differential TMDS high-speed signal path rate is extremely low, but is still applicable to the optical fiber transmission, and the cost of the optical multiplexer is much lower than that of the gecarbox, which is more cost-saving.

Example IV

Referring to fig. 4, an HDMI data transmission and control system includes:

a fourth transmitter module and a fourth receiver module.

The fourth transmitter module and the fourth receiver module are in communication connection through a single optical fiber.

The fourth transmitter module includes a seventh HDMI signal codec unit, a seventh laser driving unit, a seventh demultiplexer, and a seventh optical multiplexer. A seventh PD+TIA unit and a seventh optical multiplexer are additionally arranged between the seventh HDMI signal encoding and decoding unit and the seventh optical multiplexer.

The fourth receiver module includes an eighth HDMI signal codec unit, an eighth laser driving unit, an eighth demultiplexer, and an eighth optical multiplexer. The eighth HDMI signal encoding and decoding unit is connected with the eighth optical multiplexer through an eighth PD+TIA unit and an eighth laser driving unit.

Preferably, in the fourth transmitter module, one seventh pd+tia unit is provided, and five seventh laser driving units are provided. The four seventh laser driving units are connected with the seventh optical multiplexer, and a seventh PD+TIA unit and a seventh laser driving unit are additionally arranged between the seventh HDMI signal encoding and decoding unit and the seventh optical multiplexer.

In the fourth receiver module, the eighth pd+tia unit is provided with five, and the eighth laser driving unit is provided with one. An eighth pd+tia unit and an eighth laser driving unit are additionally disposed between the eighth HDMI signal codec unit and the eighth optical multiplexer. And the four eighth PD+TIA units are connected with an eighth optical multiplexer.

The fourth transmitter module and the fourth receiver module are each capable of transmitting optical information and receiving optical information.

Preferably, the step of transmitting optical information by the fourth transmitter module includes:

And step one, transmitting the HDMI four-way differential TMDS signal to the seventh laser driving unit.

And step two, SCL, SDA, CEC, HPD and availability 5 signals are converted into a format convenient for processing by a seventh receiver module through protocol processing, arbitration, delay and other operations by a seventh HDMI signal encoding and decoding unit, and the seventh HDMI signal encoding and decoding unit transmits the converted signals to a seventh laser driving unit.

And step three, the five laser driving units send the five signals to a seventh optical multiplexer, the seventh optical multiplexer couples the five signals to a single optical fiber in a wavelength division multiplexing mode, and the single optical fiber sends the five signals to a seventh receiver module.

Preferably, the step of receiving optical information by the fourth transmitter module includes:

step one, detecting the optical signals in the single optical fiber, filtering out the optical information of the predetermined wavelength by the seventh demultiplexer, and transmitting the optical information to a seventh PD+TIA unit.

And step two, the seventh PD+TIA unit converts the optical signal into an electric signal and transmits the electric signal to a seventh HDMI signal encoding-decoding unit.

And thirdly, the seventh HDMI signal encoding and decoding unit is responsible for decoding the electric signals sent by the seventh PD+TIA module, and timely controlling the change of SCL, SDA, CEC, HPD and availability 5 paths of low-speed signals according to protocol regulations.

Preferably, the step of receiving the optical signal by the fourth receiver module includes:

step one, detecting the optical signals in the single optical fiber, filtering the optical signals with set wavelength through an eighth demultiplexer, and transmitting the optical signals to an eighth PD+TIA unit.

And step two, the eighth PD+TIA unit converts the optical signal into an electrical signal, transmits the HDMI differential TMDS high-speed signal to a corresponding TMDS interface, and simultaneously transmits one HDMI low-speed signal to an eighth HDMI signal encoding-decoding unit.

And thirdly, the eighth HDMI signal encoding/decoding unit is responsible for decoding the transmitted control signals at the moment and timely controlling SCL, SDA, CEC, HPD, utility path change of low-speed signals according to protocol regulations.

Preferably, the step of transmitting optical information by the eighth receiver module includes:

step one: SCL, SDA, CEC, HPD and availability five-way signals are converted into a format convenient for a transmitter to process through protocol processing, arbitration, delay and other operations of the eighth HDMI signal encoding/decoding unit, and the eighth HDMI signal encoding/decoding unit transmits the five-way signals (one-way serial signals) after conversion to an eighth laser driving unit.

And step two, the eighth laser driving unit sends the modulated signal to a single optical fiber and transmits the modulated signal to an eighth receiver unit.

Preferably, in the fourth embodiment, the roof-adjusting circuit is omitted, so that the design difficulty of the seventh optical multiplexer and the eighth optical multiplexer is increased, and the HDMI data transmission and control of a single optical fiber can be achieved. The eighth optical multiplexer improves the four-way optical wavelength signal coupling from the third embodiment to the five-way optical wavelength signal coupling.

Furthermore, according to the first embodiment and the second embodiment, the gecarbox module is added to the 4-path HDMI differential TMDS signal, two new circuit systems can be formed, and the HDMI data transmission and control function can be completed by a single optical fiber.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.

Claims

1. An HDMI data transmission and control system, comprising:

a first transmitter module and a first receiver module;

the first transmitter module and the first receiver module are in communication connection through a single optical fiber;

the first transmitter module comprises a first HDMI signal coding and decoding unit, a first gecarbox unit, a first roof-adjusting control circuit and a first demultiplexer; the first HDMI signal encoding and decoding unit and the first gecarbox unit are both in data connection with the first top adjustment control circuit, and the first top adjustment control circuit is connected with the first demultiplexer; a first PD+TIA unit and a first laser driving unit are additionally arranged between the first roof-adjusting control circuit and the first demultiplexer;

The first top modulation control circuit converts five paths of signals transmitted by the first HDMI signal encoding and decoding unit into a single path of control signal, modulates the single path of control signal onto an HDMI single path high-speed signal, and sends the modulated signal to the first laser driving unit;

the first receiver module comprises a second HDMI signal coding and decoding unit, a second gecarbox unit, a second crest control circuit and a second demultiplexer; the second HDMI signal encoding and decoding unit and the second gecarbox unit are both in data connection with the second top adjustment control circuit, and the second top adjustment control circuit is connected with the second demultiplexer; a second PD+TIA unit and a second laser driving unit are additionally arranged between the second roof-adjusting control circuit and the second demultiplexer;

the second top modulation control circuit demodulates a single-path HDMI low-speed control signal from the received signal, converts the single-path HDMI low-speed control signal into a group of control signals and transmits the group of control signals to the second HDMI signal encoding-decoding unit, demodulates the single-path HDMI low-speed control signal into a single-path HDMI high-speed data signal and transmits the single-path HDMI high-speed data signal to the second gelbox unit;

the first transmitter module and the first receiver module are each capable of transmitting optical information and receiving optical information.

2. The HDMI data transmission and control system of claim 1, wherein said first transmitter module transmits optical information comprising:

the HDMI four-way differential TMDS signal is converted into a single-way signal through the first gecarbox unit, and the single-way signal is input to the first top modulation control circuit;

the first HDMI signal encoding and decoding unit converts five paths of signals of SCL, SDA, CEC, HPD and availability, and the five paths of signals after conversion are transmitted to a first top adjustment control circuit;

the first top modulation control circuit converts the five paths of signals after conversion into a single path control signal, modulates the single path control signal and sends the modulated signal to the first laser driving unit;

the first laser driving unit transmits the modulated single-path control signal to a first receiver module through the single optical fiber;

detecting an optical signal in the single optical fiber, and filtering the optical signal with a set wavelength by the first demultiplexer;

the filtered optical signals are converted into electric signals through the first PD+TIA unit, and the electric signals are input to a first roof adjusting control circuit;

The first top modulation control circuit demodulates the received signal and converts the demodulated signal into a control signal;

the first HDMI signal coding and decoding unit codes the control signal.

3. The HDMI data transmission and control system of claim 1, wherein said first receiver module receives optical information comprising:

detecting the optical signals in the single optical fiber, and filtering the optical signals with set wavelengths by the second demultiplexer;

the optical signal is converted into an electrical signal through the second PD+TIA unit, and the electrical signal is input to the second roof-adjusting control circuit;

the second top modulation control circuit demodulates the received electric signal and transmits the demodulated signal to a second HDMI signal encoding and decoding unit and a second gecarbox unit;

the second gecarbox unit converts the demodulated signal into four paths of HDMI differential TMDS signals and transmits the four paths of HDMI differential TMDS signals to the corresponding four ports;

the second HDMI signal coding and decoding unit decodes the demodulated signal;

the second HDMI signal encoding and decoding unit converts the SCL, SDA, CEC, HPD and availability five paths of signals and transmits the five paths of signals after conversion to a second top adjustment control circuit;

The second roof adjusting control circuit converts the five paths of signals after conversion into a single path of control signals; the second top modulation control circuit modulates the single-channel control signal and sends the modulated signal to the second laser driving unit;

the second laser driving unit sends the modulated signal to the single optical fiber, and the single-path control signal is transmitted to the first receiver module.

4. An HDMI data transmission and control system, comprising:

a second transmitter module and a second receiver module; the second transmitter module and the second receiver module are in communication connection through a single optical fiber;

the second transmitter module comprises a third HDMI signal coding and decoding unit, a third gecarbox unit, a third top-adjusting control circuit, a third demultiplexer and a third optical multiplexer;

each third gecarbox unit comprises two third gecarbox devices; the third HDMI signal encoding and decoding unit and the third gecarbox device are both in data connection with the third top adjustment control circuit, and the third top adjustment control circuit is both connected with the third optical multiplexer and the third demultiplexer; a third PD+TIA unit and a third laser driving unit are additionally arranged between the third roof-adjusting control circuit and the third optical multiplexer;

The third top modulation control circuit converts five paths of signals transmitted by the third HDMI signal encoding and decoding unit into a single path of control signals, modulates the single path of control signals onto HDMI single path high-speed signals, and sends the modulated signals to the third laser driving unit;

the second receiver module comprises a fourth HDMI signal encoding and decoding unit, a fourth gecarbox unit, a fourth top-adjusting control circuit, a fourth demultiplexer and a fourth optical multiplexer;

each fourth gecarbox unit comprises two fourth gecarbox devices; the fourth HDMI signal encoding and decoding unit and the fourth gecarbox device are both in data connection with the fourth top adjustment control circuit, and the fourth top adjustment control circuit is both connected with the fourth optical multiplexer and the fourth demultiplexer; a fourth PD+TIA unit and a fourth laser driving unit are additionally arranged between the fourth top adjusting control circuit and the fourth optical multiplexer;

the fourth top modulation control circuit demodulates a single-channel HDMI low-speed control signal from the received signal, converts the single-channel HDMI low-speed control signal into a group of control signals and transmits the group of control signals to the fourth HDMI signal encoding-decoding unit, demodulates the single-channel HDMI low-speed control signal into a single-channel HDMI high-speed data signal and transmits the single-channel HDMI high-speed data signal to the fourth gelbox unit;

5. The HDMI data transmission and control system of claim 4, wherein said second transmitter module transmits optical information comprising:

inputting HDMI four-way differential TMDS signals, converting the first two-way TMDS signals into a first single-way main data signal through the third gecarbox unit, and converting the second two-way TMDS signals into a second single-way main data signal through the third gecarbox unit; the first single-channel main data signal and the second single-channel main data signal are both input to the third top adjustment control circuit;

the third HDMI signal encoding and decoding unit converts the SCL, SDA, CEC, HPD and availability five paths of signals and transmits the five paths of signals after conversion to a third top adjustment control circuit;

the third top-adjusting control circuit converts the five-way signals transmitted by the third HDMI signal coding and decoding unit into a single-way control signal; the third roof-adjusting control circuit modulates the single-channel control signal to a single-channel primary data signal I or a single-channel primary data signal II; the modulated single-channel main data signal I and the modulated single-channel main data signal II are sent to the third laser driving unit;

The two third laser driving units transmit the modulated single-channel main data signal I and the modulated single-channel main data signal II to a third optical multiplexer;

the third optical multiplexer couples the modulated single-channel main data signal I and the modulated single-channel main data signal II to a single optical fiber in a wavelength division multiplexing mode, and transmits the single-channel main data signal I and the single-channel main data signal II to the second receiver module;

the step of receiving optical information by the second transmitter module includes:

detecting the optical signals in the single optical fiber, filtering the optical signals with set wavelength by the third demultiplexer, and transmitting the filtered optical signals to a third PD+TIA unit by the third demultiplexer;

the optical signal is converted into an electrical signal through the third PD+TIA unit, and the electrical signal is input to a third roof-adjusting control circuit;

the third top modulation control circuit demodulates and converts the received signal into a control signal, and transmits the control signal to a third HDMI signal encoding and decoding unit;

the third HDMI signal codec unit decodes the control signal.

6. The HDMI data transmission and control system of claim 5, wherein said second receiver module receives optical information comprising:

Detecting optical signals in the single optical fiber, filtering the single-path main data signal I and the single-path main data signal II with set wavelengths by the fourth demultiplexer, and transmitting the filtered signals to a fourth PD+TIA unit by the fourth demultiplexer;

the signals of the fourth PD+TIA unit are converted into two paths of electric signals, and the two paths of electric signals are input to the fourth top adjusting control circuit;

the fourth crest control circuit demodulates one of the received signals and transmits the demodulated signal to a fourth HDMI signal encoding and decoding unit and a fourth geoframe unit;

the fourth gecarbox unit converts the demodulated single-channel main data signal I and single-channel main data signal II into four-channel HDMI differential TMDS signals and transmits the four-channel HDMI differential TMDS signals to corresponding ports;

the fourth HDMI signal coding and decoding unit codes the control signal;

the step of transmitting optical information by the second receiver module includes:

SCL, SDA, CEC, HPD and availability five-way signals are transmitted to a fourth top-adjusting control circuit through the fourth HDMI signal encoding and decoding unit, and the fourth HDMI signal encoding and decoding unit converts the five-way signals;

The fourth top-adjusting control circuit converts the five signals which are transmitted by the fourth HDMI signal encoding-decoding unit and are converted into a single-channel control signal again; the fourth top modulation control circuit modulates the single-channel control signal and sends the modulated signal to the fourth laser driving unit;

the fourth laser driving unit sends the modulated single-path control signal to the single optical fiber, and the single optical fiber transmits the single-path control signal to the second receiver module.

7. An HDMI data transmission and control system, comprising:

a third transmitter module and a third receiver module; the third transmitter module and the third receiver module are in communication connection through a single optical fiber;

the third transmitter module and the third receiver module are both capable of transmitting optical information and receiving optical information;

the third transmitter module comprises a fifth HDMI signal coding and decoding unit, a fifth top-adjusting control circuit, a fifth demultiplexer and a fifth optical multiplexer;

the fifth HDMI signal coding and decoding unit is connected with a fifth top adjustment control circuit, and the fifth top adjustment control circuit is connected with the fifth optical multiplexer and the fifth demultiplexer; a fifth PD+TIA unit and a fifth laser driving unit are additionally arranged between the fifth top adjusting control circuit and the fifth optical multiplexer;

The fifth top adjustment control circuit converts the five paths of signals transmitted by the fifth HDMI signal encoding and decoding unit into a single path of control signals, modulates the single path of control signals onto any one path of single path high-speed signals on the four paths of HDMI data paths, and sends the modulated signals to the fifth laser driving unit;

the third receiver module comprises a sixth HDMI signal coding and decoding unit, a sixth modulated top control circuit, a sixth demultiplexer and a sixth optical multiplexer; the sixth HDMI signal encoding and decoding unit is connected with a sixth top-adjusting control circuit, and the sixth top-adjusting control circuit is connected with the sixth optical multiplexer and the sixth demultiplexer; a sixth PD+TIA unit and a sixth laser driving unit are additionally arranged between the sixth top adjusting control circuit and the sixth optical multiplexer;

the sixth top modulation control circuit demodulates a single-path HDMI low-speed control signal from the received signal, converts the single-path HDMI low-speed control signal into a group of control signals and transmits the group of control signals to the sixth HDMI signal encoding and decoding unit, demodulates the single-path HDMI low-speed control signal into a single-path HDMI high-speed data signal, restores the single-path HDMI high-speed data signal into a differential signal and transmits the differential signal to the corresponding port.

8. The HDMI data transmission and control system of claim 7, wherein said third transmitter module transmits optical information comprising:

The HDMI four-way differential TMDS signal is transmitted to the fifth top adjusting control circuit;

the fifth HDMI signal encoding and decoding unit converts SCL, SDA, CEC, HPD and availability five paths of signals and transmits the five paths of signals after conversion to a fifth top adjustment control circuit;

the fifth top-adjusting control circuit converts the five-way signals which are transmitted by the fifth HDMI signal encoding-decoding unit and are converted into a single-way control signal again; the fifth top modulation control circuit modulates the single-channel control signal to any one of four paths of HDMI data paths, and sends the modulated four paths of HDMI data to a fifth laser driving unit; the four-way HDMI data comprises a first main data signal, a second main data signal, a third main data signal and a fourth main data signal;

the four fifth laser driving units send the modulated four paths of HDMI data to a fifth optical multiplexer module, the fifth optical multiplexer module couples the four paths of HDMI data to the single optical fiber in a wavelength division multiplexing mode, and the single optical fiber sends the four paths of HDMI data to a third receiver module;

the step of receiving optical information by the third receiver module includes:

Detecting optical signals in the single optical fiber, filtering the four paths of HDMI data with set wavelength by the sixth demultiplexer, and transmitting the filtered signals to a sixth PD+TIA unit by the sixth demultiplexer;

the sixth PD+TIA unit converts the signals into four paths of electric signals and inputs the four paths of electric signals to the sixth top adjusting control circuit;

the sixth top modulation control circuit demodulates the received signal and transmits the demodulated signal to a sixth HDMI signal encoding and decoding unit;

the demodulated four paths of electrical signals are converted into four paths of HDMI differential TMDS signals and transmitted to corresponding ports;

the sixth HDMI signal codec unit decodes the control signal.